Refining of hydrocarbon oil



l atented Dec. 6, 1 932 UNITED T S PATE T; oFFmEf JACQUE C. MORRELL ANDJESSE L. ESSEX, OF CHICAGO, ILLINOIS, ASSIGNORS TO. UNIVERSAL OILPRODUCTS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA NoDrawing.

This invention relates to refining of hydro: carbon oils and refers moreparticularly to the purification or refining of cracked distillates forthe purpose of'removing therefrom objectionable and deleterious 7compounds which are present therein or may be formed as a result of thecommercial use thereof.

In its broad aspects, the present invention is directed to the treatmentof cracked distillates produced from liquid phase, liquid-vapor phase,or vapor phase cracking processes, while in its specific aspects it isparticularly adapted to the refining of cracked distillates produced inthe vapor phase cracking of hyvention to provide a process for removingthose compounds which are gummy in themselves or form gummy compounds oroily polymers when used. It is a further object to produce this resulteconomically and efficiently.

It is a still further object of the invention to produce a productcharacterized by its stability, absence of colorforming and odor formingcompounds, and free from objectionable amounts of gum forming or polymerforming compounds.

In the specific embodiment of the present, invention we propose tosubject cracked distillates to the action of borax, either dry or inREFINING OF HYDROCARBON OIL Application filed January '9, 1928. SerialNo. 245,625.

undergoing this treatment, for example, cracked distillates from vaporphase.crack-- ing of hydr0carb0ns, have been reduced in i gum content toas low as 3%to- 10% of'the original gum content, for example, crackeddistillates containinga gum content of 3,000 milligrams per 100 ccs.have been reduced to approximately 100 milligrams per 100 ccs.

The refining agent contemplated for use with the present invention, i.e. borax, may

be used as a sole refining agent or may be used .as a step in refiningin conjunction with us ual refining agents such as sulphuric acid,caustic soda, sodium plumbite, adsorbent material and the like. i y Weclaim as our invention; c

1. A step in a process of refining cracked hydrocarbon distillate whichconsists in subjecting said distillate to the action of borax at atemperaturesubstantially above atmosv 1 hydrocarbon distillates obtainedby vapor phase cracking of hydrocarbon oils, which consists insubjecting such distillate to the action of borax at a temperaturesubstantially above atmospheric but below cracking to remove gummycompounds and oily polymers therefrom.

" JACQUE C. MORRELL.

JESSE .L. ESSEX.

solution. In carrying outthe process the borax is introduced into thecracked distillate and the entire mixture subjected to heat The I mannerof heating may be by prolonged refluxing, by distilling while refluxing,or by distilling the oil over the borax. In short, the time of heatingthe oil in the presence of the borax is regulated to suit the type ofoil undergoing treatment, and the results desired in the refining actionand reduction in amount of deleterious substances. As an illlustration,it has been observed thatoils

